Howtosignalprocessing
- What does a quarter-wave transformer do?
- How do you calculate the length of a quarter-wave transformer?
- What is the electrical length of a quarter-wave transformer?
- What is quarter wavelength transmission line?
What does a quarter-wave transformer do?
A quarter-wave transformer is a simple impedance transformer which is commonly used in impedance matching in order to minimize the energy which is reflected when a transmission line is connected to a load.
How do you calculate the length of a quarter-wave transformer?
The length should be one-quarter wavelength with respect to the signal propagating in the line. The free-space wavelength λ0=c/f at 10 GHz is ≅3 cm. Therefore, the wavelength of the signal in the line is λ=0.6λ0≅1.8 cm, and the length of the line should be l=λ/4≅4.5 mm.
What is the electrical length of a quarter-wave transformer?
Quarter-wave impedance transformers are designed for a particular frequency and the length of the transformer is equal to λ0/4 only at this designed frequency.
What is quarter wavelength transmission line?
A quarter-wave impedance transformer, often written as λ/4 impedance transformer, is a transmission line or waveguide used in electrical engineering of length one-quarter wavelength (λ), terminated with some known impedance. It presents at its input the dual of the impedance with which it is terminated.
